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unproven innocence3/21/2016 1:15:43 pm PDT

re: #208 dog philosopher ஐஒஔ௸

everybody has to have an utterly wtf?? bug from time to time

I’ve spent literally years tweeking, enhancing, polishing, and rewriting a custom programming environment which ran a small bit of code literally hundreds of thousands of times per second. So damn simple, it *has* to work. About 8 or so instructions. Small enough to fit in the CPU instruction pipeline/cache. And the custom OS with that snippet of code at the heart of it would run *flawlessly* for weeks at a time. But then it would fail.

The custom register dumps (both 16bit and 32bit) that I wrote for handling/diagnosing errors would show me *exactly* where the “error” was occurring. Somehow, the state of the carry bit was getting corrupted in the single-core CPU, from time to time, on W98se. I gave up when the hard drive died.